Furnace-valve



(No Model.)

G. W. MGGLURE.

FURNAGE VALVE.

Patented Aug. 27,1895.

WITNESSES 'Unirse STATES PATENT @Brion GEORGE IV. MCGLURE, OF PITTSBURG, PENNSYLVANIA.

FURNAcE-VALVE.

SPECIFICATION forming part O Letters atent No. 545,244, dated August 2'?, i895.

Application tiled January l5, 1895. Serial No. 534,977. (No model.)

To all whom t may concern:

Be it known that I, GEORGE W. MoCLUnE, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Furnace-Valves, of which the following is a full, clear, and eX- act description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a vertical central section through a hot-blast-stove chimney having my valveseat therein; and Fig. 2 is a partial plan view of the valve, valveseat, and seat-ring.

The purpose of my invention is to provide simple and edective means by which the valveseats used with the chimney-valves of hot-blast stoves or other furnaces can be cooled and prevented from being destroyed by the heat.

In the drawings, 2 represents the chimney of a hot-blast stove.

3 is the valve-seat ring, to which the stack is fixed.

4 is the annular valve-seat secured Within the ring, and 5 is the valve. The seat-ring is composed of two superposed flat disks G 7, connected at intervals by vertical Webs 8, so spaced as to afford intervening air spaces or passages 9. The annular valve-seat 4: is secured to the disk 6 by bolts passing through a flange l0 on the seat, and an annular shoulder 1l at the base of the seat ts on the seat-ring and is supported thereby, so that thereshall be an annular air-space between the flange lO land disk 6. Then the parts are thus constructed the natural upward draft through the stack will induce a constant current of air from the outside between the disks G and 7, and thence between the disk G and ange 10, and this air-current impinging on the valveseat and passing therefrom in an annular current keeps all parte of it evenly cool and effectually prevents its injury by the heat. By thus dispensing with Water-cooling and malring the device self-acting, I effect very important results.

Without limiting myself with strictness to the construction shown in the drawings, Which may be varied by the skilled mechanic without departurefrom my inventiomwhat I claim 1s- 1. The combination with a chimney-valve seat, of a supporting ring, said seat and ring having an intermediate annular air passage communicating with the chimney-Hue and also communicating With the atmosphere, for the passage of a cooling current of air; substantially as described.

2. A chimney valve seat having a supporting ring within which the seat is supported, said ring being composed of separated disks affording an air passage and a seat supported on the ring and having a flange by which it is fixed thereto, said ange and ring being separated to afford an air-passage; substantially as described.

In testimony whereof I have hereunto set my hand.

GEORGE IV. MCCLURE.

Witnesses:

W. B. GORWIN, H. M. GORWIN. 

